Gunther Ottersbach, M.D.
Internal Medicine Physician · La Mesa, CA
Gunther Ottersbach, M.D. is an internal medicine physician with a practice address in La Mesa, California, and NPI 1215114533, issued on Jan 29, 2008. Check the license (California A110590, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gunther Ottersbach
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A110590 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8851 Center Dr, La Mesa, CA 91942
- Phone
- (619) 461-1920
- Enumerated
- Jan 29, 2008
- Record last updated
- Sep 6, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (619) 461-1919
- Medicare enrollment
- Enrolled (PECOS I20100709000879); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 8851 Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Chun Chow, NPFamily Nurse Practitioner1639589591
- Lauri Combs, LCSWClinical Social Worker1538398979
Verify Gunther Ottersbach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A110590Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average internal medicine physician in 2024
593 Medicare Part D claims for 221 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium66 claims
- Atorvastatin Calcium36 claims
- Furosemide31 claims
- Amlodipine Besylate29 claims
- Cefuroxime22 claims
- Ondansetron Odt19 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $116.97
5 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Emergency And Acute Care Medical CorporationLa Mesa, CA
- San Diego Critical Care Medical Group IncLa Mesa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
61 internal medicine physician records list a practice address in La Mesa
They are 61 of the 2,168 NPPES records with a practice address in La Mesa, and 17,696 internal medicine physician records in California.
All 61 in La Mesa → All 17,696 in California → Every provider in La Mesa →
Other internal medicine physician records in California
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- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Gunther Ottersbach, M.D.'s NPI number?
Gunther Ottersbach, M.D.'s National Provider Identifier (NPI) is 1215114533, issued on Jan 29, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Gunther Ottersbach, M.D. located?
The NPPES record lists a practice address at 8851 Center Dr, La Mesa, CA, 91942. Phone: (619) 461-1920. Providers update this record themselves, so call before visiting.
How can I verify Gunther Ottersbach, M.D.'s license?
NPPES lists California license number A110590, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gunther Ottersbach, M.D. prescribe under Medicare Part D?
In 2024, Gunther Ottersbach, M.D. had 593 Medicare Part D claims for 221 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.